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university:courses:electronics:electronics-lab-breadboards [31 Jan 2013 19:59] – [Using breadboards with the Analog Discovery Module:] Doug Mercer | university:courses:electronics:electronics-lab-breadboards [18 Apr 2019 21:14] (current) – [Breadboarding tips:] Doug Mercer | ||
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3. Arrange the jumper wires to lay flat on the board, so that the board does not become cluttered.\\ | 3. Arrange the jumper wires to lay flat on the board, so that the board does not become cluttered.\\ | ||
4. Route jumper wires around the integrated circuits and not over the packages. This makes changing the chips easier as needed.\\ | 4. Route jumper wires around the integrated circuits and not over the packages. This makes changing the chips easier as needed.\\ | ||
- | 5. Trimming the leads of components like resistors, capacitors, transistors and LEDs, so that they fit closely to the board and do not get pulled out by accident is a good practice.\\ | + | 5. Trimming the leads of components like resistors, capacitors, transistors and LEDs, so that they fit closely to the board and do not get pulled out by accident is a good practice. While short wires and leads look neater, the clipped components will only fit into a limited “span” of breadboard socket holes, limiting the use |
+ | of the component in other experiments. It is perfectly permissible to use components with longer leads while exploring different circuit possibilities.\\ | ||
- | ===== Using breadboards with the Analog Discovery Module: ===== | + | Be cautious when inserting components which have been removed from a tape reel used in automatic insertion equipment. Suppliers of surplus components often sell components in small batches cut from larger taped reels. Removing |
- | All the connections | + | It is important |
+ | Always use solid wire for breadboard connections. When stripping the wire ends, be careful not to strip more than about three-eighths of an inch of insulation from the wire. Too much bare wire may result | ||
- | Adapters such as those shown below are workable alternatives. They adapt the square male pins of the Discovery | + | |
+ | ===== Using breadboards with the ADALM2000 Module: ===== | ||
+ | |||
+ | All the connections to the ADALM2000 design kit are made though the 30 pin male header (0.1" centers) connector on the side of the module. This is a very common, generic style connector and is simple to attach wires to as with the various female to female cables supplied in the kit. Double length square male pins are included to change the female end of the wires into male pins that can be easily inserted into the solder-less breadboards used in the lab for building example circuits. These fly-wires are several inches long and can be awkward to use at times given the relatively light weight of the ADALM2000 box and a small solder-less breadboard. | ||
+ | |||
+ | Adapters such as those shown below are workable alternatives. They adapt the square male pins of the ADALM2000 | ||
{{: | {{: | ||
- | These adapters can be easily constructed from dual row female receptacles, | + | These adapters can be easily constructed from dual row female receptacles, |
A 12 pin (dual row of six) version is also available from: | A 12 pin (dual row of six) version is also available from: | ||
- | The smaller adapters can be used individually or combined to fill out the entire 30 pins of the Discovery | + | The smaller adapters can be used individually or combined to fill out the entire 30 pins of the ADALM2000 |
- | Another more convenient arrangement would be an adapter PC board that connects to the 30 pin male header of Discovery | + | Another more convenient arrangement would be an adapter PC board that connects to the 30 pin male header of ADALM2000 |
{{ : | {{ : | ||
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<WRAP centeralign> | <WRAP centeralign> | ||
- | The board consists of a grid of 21 by 30 plated through holes on 0.1" centers which can be used to solder test circuits. Three of the columns of holes on the left side of the grid are shorted together and tied to the +5V, -5V and ground connections on the 30 pin right angle female connector that mates with Discovery. Three of the columns of holes on the right side of the grid are shorted together and tied to the +9V, -9V and ground connections for use with external batteries or other sources of power. The 30 Discovery | + | The board consists of a grid of 21 by 30 plated through holes on 0.1" centers which can be used to solder test circuits. Three of the columns of holes on the left side of the grid are shorted together and tied to the +5V, -5V and ground connections on the 30 pin right angle female connector that mates with ADALM2000. Three of the columns of holes on the right side of the grid are shorted together and tied to the +9V, -9V and ground connections for use with external batteries or other sources of power. The 30 ADALM2000 |
The 21 X 30 grid is sized to accommodate the popular 30 position (400 total connection points) solder-less breadboards with power busses along both sides which are 2 1/8" by 3 1/4". These breadboards come with adhesive backs that will stick the breadboard to the adapter PC board. | The 21 X 30 grid is sized to accommodate the popular 30 position (400 total connection points) solder-less breadboards with power busses along both sides which are 2 1/8" by 3 1/4". These breadboards come with adhesive backs that will stick the breadboard to the adapter PC board. | ||
- | The schematic of the adapter board is shown in figure 5. The signals and power supplies that Analog Discovery | + | The schematic of the adapter board is shown in figure 5. The signals and power supplies that ADALM2000 |
{{ : | {{ : | ||
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<WRAP centeralign> | <WRAP centeralign> | ||
- | The layout of the resistors around the dual op-amp are arranged such that rather than two independent amplifiers, a single resistor can be inserted between the two inverting inputs, in place of the two resistors (R1,R4) to ground. Configured this way the two op-amps form the input section of an instrumentation amplifier. The amplified differential signal at the outputs of the two amplifiers can then be connected to the differential scope inputs on Discovery. Another possible use would be to generate complementary or differential signals from one of the AWGs. By connecting one input to ground, with the other input connected to one of the AWG outputs and adjusting the resistor values the first amplifier acts as a non-inverting stage to generate the in phase or true output and the other amplifier acts as an inverting stage to generate the 180º phase or complement output. To make it easy to swap resistor values individual pin sockets could be installed rather than directly soldering the resistors to the board. Likewise using a socket for the op-amp would allow you to interchange different devices optimized for the intended application. | + | The layout of the resistors around the dual op-amp are arranged such that rather than two independent amplifiers, a single resistor can be inserted between the two inverting inputs, in place of the two resistors (R1,R4) to ground. Configured this way the two op-amps form the input section of an instrumentation amplifier. The amplified differential signal at the outputs of the two amplifiers can then be connected to the differential scope inputs on ADALM2000. Another possible use would be to generate complementary or differential signals from one of the AWGs. By connecting one input to ground, with the other input connected to one of the AWG outputs and adjusting the resistor values the first amplifier acts as a non-inverting stage to generate the in phase or true output and the other amplifier acts as an inverting stage to generate the 180º phase or complement output. To make it easy to swap resistor values individual pin sockets could be installed rather than directly soldering the resistors to the board. Likewise using a socket for the op-amp would allow you to interchange different devices optimized for the intended application. |
- | The Discovery | + | The ADALM2000 |
Eagle CAD schematic and PCB layout files can be down loaded here {{: | Eagle CAD schematic and PCB layout files can be down loaded here {{: | ||
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==== For more on building advanced breadboards see: ==== | ==== For more on building advanced breadboards see: ==== | ||
- | http:// | + | http:// |
+ | http:// | ||
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