Ordering PCBs
The included gerbers in /PCB/Production/ are exported from KiCad using the recommended settings for JLCPCB. I cannot guarantee that they will work at a different fab. JLCPCB is far and away the most cost effective for low volume PCB orders, coming out to $3.52 for 20 boards before tax if you use their economy shipping option (as of 2024). There are four files, two for each board (one single board, and one panelized). Using the panelized board files is highly recommended, as it allows for More Board Per BoardTM without additional cost. The default JLCPCB order parameters are good enough for working boards out of the box, but I’d recommend changing the color to yellow (because it’s lemon scented) and to select “no mark” so you don’t have some unique identifier printed on the board somewhere.
Ordering Parts
Links to all required components can be found in the headers of the table.
A fully parametric breakdown that allows for adjusting tax, quantity, and more can be found in the Excel file BOM.xlsx or the Google Sheets page (if you want to modify it, you’ll have to make a copy first).
All prices are in USD. Sales tax is calculated at 8.25%. The table is based on a full set of trackers and includes 2 extra D1s, BMIs, and QMCs to account for possible DOA parts or accidents during assembly. Note that the LED and associated 620Ω resistor, as well as the pogo pins are not necessary for core tracker operation, as specified in the comment row.
The table scrolls horizontally, it was too wide to fit.
| Tracker Components | D1 Mini v4 | BMI160 | TP-4056 | GY-271 | SK12D07VG4 | JST-PH-4P | Pogo Female | B5817WS | 0805 180k | 0806 620r | 0805 LED | 803450 | Wires | Motherboard | Daughterboard | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Listing Price | $1.43 | $0.88 | $3.27 | $0.58 | $1.20 | $3.79 | $12.93 | $1.20 | $1.05 | $1.05 | $2.47 | $25.99 | $11.93 | $2.00 | $2.00 | |
| Shipping | $2.63 | $2.32 | $ - | $ - | $ - | $ - | $ - | $ - | $ - | $ - | $ - | $ - | $ - | $1.52 | $1.52 | $7.99 |
| Subtotal | $15.50 | $12.88 | $3.27 | $6.96 | $1.20 | $3.79 | $12.93 | $1.20 | $1.05 | $1.05 | $2.47 | $25.99 | $11.93 | $3.52 | $3.52 | $107.26 |
| Tax | $1.28 | $1.06 | $0.27 | $0.57 | $0.10 | $0.31 | $1.07 | $0.10 | $0.09 | $0.09 | $0.20 | $2.14 | $0.98 | $0.29 | $0.29 | $8.85 |
| Total | $16.78 | $13.94 | $3.54 | $7.53 | $1.30 | $4.10 | $14.00 | $1.30 | $1.14 | $1.14 | $2.67 | $28.13 | $12.91 | $3.81 | $3.81 | $116.11 |
| Order Quantity | 9 | 12 | 1 | 12 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| Item Quantity | 1 | 1 | 20 | 1 | 20 | 100 | 20 | 100 | 100 | 100 | 600 | 10 | 12 | 20 | 40 | |
| Price Per Unit | $1.86 | $1.16 | $0.18 | $0.63 | $0.06 | $0.04 | $0.70 | $0.01 | $0.01 | $0.01 | $0.00 | $2.81 | $1.08 | $0.19 | $0.10 | |
| Quantity Per Primary Tracker | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | |
| Quantity Per Secondary Tracker | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | |
| Price Per Primary Tracker | $1.86 | $1.16 | $0.18 | $0.63 | $0.06 | $0.04 | $0.70 | $0.03 | $0.01 | $0.01 | $0.00 | $2.81 | $ - | $0.19 | $ - | $7.69 |
| Price Per Secondary Tracker | $ - | $1.16 | $ - | $0.63 | $ - | $0.04 | $ - | $ - | $ - | $ - | $ - | $ - | $1.08 | $ - | $0.10 | $3.00 |
| Comment | Optional | Optional | Optional |