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Hello Drinkbot
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Bill of Materials as of May 16, 2019
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TitleCommentsPrice# of bots that makesTotal
if you have a pi, sd card, and wall worts
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Raspberry Pi 7" Touch Screen Display
Offered by MemoryWhiz.
Totally optional$67.000$0.00$0.00
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uxcell M2.5x12mm Machine Screws Pan Phillips Cross Head Screw 304 Stainless Steel Fasteners Bolts 100Pcs
Offered by uxcell.
Enough for 25 bots$8.9912/300.35960.3596
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Shapenty 100PCS 3mm Small Stainless Steel Female Thread Hex Screw Nut Fastener Tool, M3
Offered by Shapenty.
Enough for 10 four pump bots$5.590.1$0.56$0.56
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Goldso Raspberry Pi 3 Model B Power Supply 5V 2.5A Adapter/Charger with Power On/Off Switch
Offered by Shen Zhen Eno Co.,Ltd.
You may have one around...make sure it is at least 2.5 amps$7.991$7.990
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Nexlux DC 12V 3A Power Adapter, AC 100-240V to DC 12V 3A Transformer, 36W Power Supply Adapter for 12V LED Strip Lights CCTV Camera LED Modules and Monitor
Offered by Nexlux-US.
Almost certainly you have a 12 volt wall wort. One amp might work, but if you run multiple pumps at the same time having 2-3 amps is better.$9.991$9.990
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Baomain Red Female Insulated Spade Wire Connector Electrical Crimp Terminal 18-22 AWG 2.8 x 0.5mm 100 Pack
Offered by Baomain.
Enough for 10 four pump bots$5.290.1$0.53$0.53
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HanTof Raspberry Pi 3 Model B+ Standoffs Pack 24 Pieces/LoT M2.5 (11mm Body + 6mm Screw) Hex Brass Standoff Cylinder + Screw + Nut Kits for Raspberry pi 3 B Plus/3B/2B/B+/A+ Hat
Offered by HanTof.
Enough for 4 bots.$5.990.25$1.50$1.50
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SanDisk Ultra 32GB microSDHC UHS-I card with Adapter - 98MB/s U1 A1 - SDSQUAR-032G-GN6MA
Offered by Amazon.com.
8 gb is probably more than enough, but maybe you want to do more cool things with your bot.$7.001$7.000
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Uxcell a15070200ux0058 M3 x 12mm 304 Stainless Steel Phillips Pan Head Screws Bolt (Pack of 60)
Offered by Amazon.com.
Enough for six four pump bots.$11.930.1666666667$1.99$1.99
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INTLLAB 3mm ID x 5mm OD Peristaltic Pump Flexible Hose Silicone Tubing Food Grade Tube 3 Meter
Offered by INTLLAB Store.
enough for a bit more than 1 bot$7.800.6$4.68$4.68
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[Real 18AWG 43x2pcs Wires] 10 Pairs DC Power Pigtail Cable, 12V 5A Male & Female Connectors for CCTV Security Camera and Lighting Power Adapter by MILAPEAK (2.1mm x 5.5 mm, Ultra Thick 18AWG)
Offered by MILAPEAK.
This has ten pair, you only need a single female adapter.$9.380.1$0.94$0.94
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INTLLAB 12V DC DIY Peristaltic Liquid Pump Dosing Pump for Aquarium Lab Analytical 3mm ID x 5mm OD
Offered by INTLLAB Store.
These are on Ali Express for $6.20 if you are patient.$9.804$39.20$39.20
ali express pumps save $14
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Adafruit DC & Stepper Motor HAT for Raspberry Pi - Mini Kit
Offered by Easytransactions.
$21.761$21.76$21.76
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Element14 Raspberry Pi 3 B+ Motherboard
Offered by fidelitydealz.
Older Pi's will work, but you need to get the right headers to fit on the motor Hat. A Pi Zero W also appears to work. But the mounting holes are slighly different.$37.810$0.00$0.00
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woodenough for 8ish bots320.125 $ 4.00 $ 4.00
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18 Guage wire
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total$100.13$75.15
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In class/registered and hopefully paid17
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1 for Jason1
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1 for Tiprin1
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1 person paid cash1
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So I think I am due the cost of 18 bots, minus the costs of 2 Pi's18$1,802.37
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78-78
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$1,724.37
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That doesn't include costs for prototyping, and waste, and etc :-)
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