Voter
About the Voter PCB
Voter is an open source PCB design by AllStarLink, published on GitHub under the AGPL-3.0 license. It is a board, with 99 components from 53 distinct parts.
Other key parts include the AD820ANZ, MCP4131, MCP6004 and 74HC4053N. By type, the board carries 40 resistors, 39 capacitors, 6 ICs, 5 diodes, 3 jumpers and 3 test points.
It belongs with the rf & radio designs in this gallery.
From the project
The VOTER (Voice Observing Time Extension for Radio) system connects multiple sites to an AllStarLink app_rpt system.
This is a re-draw of the original VOTER Eagle schematics, using KiCAD 6.0.
The original schematic has been broken up in to sheets, based on function. All of the analog signal processing is on one sheet, digital processing on another sheet, and I/O on another sheet.
This is to allow for better visualisation of how the circuit functions.
This schematic is correct and accurate as far as can be determined, however, use at your own risk.
Main components on the Voter
Voter bill of materials (BOM)
99 components, 53 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | AD820ANZ AD820AN | DIP794W56P254L959H533Q8N | IC11 |
| 1 | MCP4131 | DIP254P762X533-8 | U1 |
| 3 | MCP6004 | U2, U3, U4 | |
| 1 | 74HC4053N | U14 | |
| 1 | Disc Lvl Boost | JP1 | |
| 1 | 20dB Pad | JP2 | |
| 1 | TX Lvl Select | JP3 | |
| 1 | Filter O/P (AC) | TP1 | |
| 1 | Squelch/RSSI Volts | TP3 | |
| 1 | Gnd | TP4 | |
| 2 | 67YR10KLF 10k | 67YR10KLF | VR22, VR61 |
| 1 | 67YR10KLF 100k | 67YR10KLF | VR35 |
| 5 | BAT85 | D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D3, D4, D5 |
| 2 | 47pF | C1, C60 | |
| 5 | 1nF | C2, C3, C4, C5, C28 | |
| 1 | 330pF | C6 | |
| 15 | 0.1uF | C7, C8, C9, C10, C11, C12, C14, C15 +7 | |
| 2 | 22uF | C13, C16 | |
| 6 | 68nF | C17, C18, C19, C20, C21, C22 | |
| 1 | 15nF | C25 |
Show 33 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 6.8nF | C26 | |
| 1 | 22pF | C29 | |
| 1 | 4.7nF | C31 | |
| 1 | 10uF NP | C63 | |
| 1 | 0.47uF | C64 | |
| 2 | 100uF | C68, C69 | |
| 2 | 220k 1% | R1, R9 | |
| 1 | 7.32k 1% | R2 | |
| 2 | 3.01k 1% | R3, R24 | |
| 2 | 1k 1% | R4, R5 | |
| 1 | 17.8k 1% | R6 | |
| 1 | 154k 1% | R7 | |
| 6 | 10k 1% | R8, R17, R20, R62, R64, R65 | |
| 2 | 220 1% | R12, R18 | |
| 1 | 22k 1% | R13 | |
| 3 | 100k 1% | R14, R16, R37 | |
| 2 | 33k 1% | R15, R38 | |
| 1 | 4.7 1/4W | R19 | |
| 2 | 2.2k 1% 1/4W | R21, R23 | |
| 1 | 8.25k 1% | R25 | |
| 1 | 11k 1% | R26 | |
| 1 | 47.5k 1% | R27 | |
| 1 | 16.2k 1% | R28 | |
| 1 | 12.1k 1% | R29 | |
| 1 | 12.4k 1% | R30 | |
| 1 | 7.68k 1% | R31 | |
| 1 | 21.5k 1% | R32 | |
| 1 | 110k | R33 | |
| 1 | 1.0M 1% | R34 | |
| 1 | 100k | R36 | |
| 1 | 330k 1% | R59 | |
| 1 | 33 | R60 | |
| 1 | 4.7 | R63 |
Voter design files
The KiCad project lives in the AllStarLink/Voter repository on GitHub; these links point at the commit this page was built from.
Voter: common questions
How many components are on the Voter?
99 components, from 53 distinct parts. The full bill of materials is listed on this page.
Where can I download the Voter design files?
From the AllStarLink/Voter repository on GitHub, which has the schematic; the links under Design files point to each one.
Can I use the Voter design in my own project?
Yes, under the terms of its AGPL-3.0 license, which AllStarLink chose for the repository.
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