Verified 2026-10
seeed HPS-167 ToF Infrared Distance Measuring sensor(0.08-35m)
Single-point 850 nm infrared time-of-flight ranger: 0.08-35 m on a 90% reflectance white target, up to 54 Hz, reporting distance, accuracy indication, signal strength, ambient IR level and temperature over a 3.3 V TTL UART at 115200 8N1 from a 4-6 V supply; 35 x 24 x 21.5 mm, 8 g, IEC62471 Class 0 eye safety.
Place this board on a carrier in the editor →
Part & documents
| Headline part | HPS-167 |
|---|---|
| Data sheet | HPS-167 data sheet → |
| Source | www.seeedstudio.com/HPS-167-ToF-Infrared-Distance-Measuring-sensor-0-08-35-p-3144.html → |
Pinout
No pin map is recorded for this board — the vendor publishes no pin numbering for it, so none is guessed here.
Buses
| Bus | Signals | Pins | Voltage | Note |
|---|---|---|---|---|
| UART | TX, RX | 3.3 V | TTL UART, 115200 bps, 8 data bits, no parity, 1 stop bit. Seeed publishes the interface but no connector and no pin numbering, so no bus pins are recorded — there is nothing to key them to. |
Power
| Input | 4-6 V DC (Seeed's technical table: "Power supply 4 ~ 6V") |
|---|---|
| Input range | 4-6 V |
The vendor publishes power as watts, not amps: maximum power consumption 1.3 W, quiescent 0.1 W, so no typical_ma is recorded — any mA figure would be this run dividing watts by a voltage, not the vendor's number. Operating temperature -10 to +55 C. The storage row is printed "40 ~ 85°C"; the minus sign is missing in the vendor's table and is not supplied here.
Notes
No pin map exists to record, and that is a finding rather than an omission: Seeed's current product PDF (6 pages) carries the headings "Mechanical drawing & device pinout", "Application schematic" and "Technical details", but the two drawings are absent from the file — only the heading text ships — so connector type, pin order and mounting geometry are unpublished. The technical table is also missing from that PDF and survives only in Seeed's Bazaar page for SKU 101990340, which is what the mirrored print cited below reproduces; that print shows "IN STOCK 11" while the live listing reads "Out of stock" plus "Discontinued", so the product is not buyable at Seeed. Other vendor figures: 850 nm LED emitter, emitting angle ±1.8°, ECCN 6A992, CE/FCC/RoHS. The vendor contradicts itself on the case: the feature bullet says 35 mm wide, the technical table says 34 mm — recorded as a disagreement, not averaged. Gross weight 10 g against 8 g net. Unsourced here: the logic threshold of the UART RX line ("3.3V UART interface" is the only statement) and whether a 5 V host can drive it directly. UPDATE 2026-10-21 (vision read): Seeed's current PDF export is defective - on page 4 the " "headings 'Mechanical drawing & device pinout' and 'Application schematic' are followed by blank " "space because the two figures failed to embed. The same document mirrored at " "resources.ampheo.com DOES carry those figures, and they were read at native resolution with a " "vision model: they are Figure 1 front view, Figure 2 top view, Figure 3 bottom view, Figure 4 " "lens cover - i.e. mechanical drawings only. Figure 3 shows the FPC connector with a printed " "'Pin 1' arrowhead and no other pin text. The kit photographs read the same way: an 8-pin 0.5 mm " "FPC, pads numbered 1-8 on the breakout, no signal names silkscreened. So the conclusion stands - " "the vendor publishes no pin-definition table - but it is now a verified finding from the figures " "themselves rather than an inference from their absence, and the mechanical dimensions above " "(4x 2 mm holes on 29 x 19 mm centres, 20 mm apertures on 17 mm centres, R2 corners) come from " "those drawings.
AI context
Dense context for pasting into a model prompt — addresses, pinout, voltages, tolerances and the vendor's reference circuit.
PART: Hypersen HPS-167 time-of-flight infrared ranging module, sold by Seeed as SKU 101990340. An 850 nm IR LED emitter plus a high-sensitivity photodiode behind a high-power emitting lens and a separate receiving lens, with embedded data processing, filtering and cross-talk compensation. PURPOSE: absolute distance measurement from 0.08 m to 35 m on a white target. INTERFACE: 3.3 V UART at 115200 bps, up to 54 Hz output data rate. The electrical interface is an 8-pin 0.5 mm pitch FPC connector on the underside of the module; the kit includes two 8-conductor 0.5 mm FPC cables (AWM 20624, 80 C, 60 V, VW-1) and a breakout board silkscreened "FPC-8P 0.5MM" whose pads are numbered 1-8 only. Seeed publishes no signal-name table for those eight conductors in the product PDF, the product page, or the mechanical drawings, so the per-pin assignment (VCC, GND, TX, RX, etc.) is NOT recorded here rather than guessed. Pin 1 is marked on the bottom silkscreen by an arrowhead beside the FPC connector. SUPPLY AND LOGIC: 3.3 V logic. Seeed states a 3.3 V UART; the module has no on-board regulator on the 3.3 V interface. RANGING: 0.08-35 m absolute on a white target, independent of target colour and reflectivity. Results include an accuracy/confidence indication. Output rate adaptive up to 54 Hz. Ambient light and temperature compensation built in; compensated over -10 C to +55 C. OPTICS AND EYE SAFETY: two 20 mm diameter apertures on 17 mm centres. Compliant with IEC 62471 Class 0 (exempt group), plus CE, FCC and RoHS. MECHANICAL: 35 mm wide x 24 mm deep x 21.5 mm tall (20.5 mm to the top of the housing plus a 1 mm board layer), 8 g. Four mounting holes of 2 mm diameter on a 29 mm x 19 mm centre-to-centre pattern, body corner radius 2 mm. The supplied lens cover measures 1.50 mm at the flange and 3.50 mm overall. REFERENCE CIRCUIT: the vendor's intended hookup is module FPC connector -> 8-conductor 0.5 mm FPC cable -> FPC-8P 0.5 mm breakout -> 0.1 in header -> jumper wires -> a 3.3 V USB-to-TTL serial adapter. The adapter Seeed ships in the kit exposes a 6-pin header labelled DTR, RXD, TXD, +5V, GND, 3V3, so the host side is a plain 3.3 V UART: cross TX to RX, common ground, and use 3V3 not +5V for a 3.3 V host. TRAPS: the eight FPC conductors are NOT labelled by the vendor anywhere in the published documentation - continuity-test the supplied cable against the pin-1 arrow rather than assuming a colour order. The FPC cable is 0.5 mm pitch, not 1.0 mm. The module is a finished unit with its own optics; do not obstruct either 20 mm aperture.
Provenance
Every figure on this page was read from the 4 sources below and last checked on Oct 17, 2026.
- vendor Seeed — HPS-167 product page (SKU 101990340, $99.00, out of stock / discontinued)
- datasheet Seeed — HPS-167 product PDF (features, 3.3 V UART at 115200, 35 x 24 x 21.5 mm, 8 g, IEC62471 Class 0; the pinout and schematic headings are in the file but the drawings are not)
- reference Seeed Bazaar HPS-167 page print — technical table read here because Seeed's own PDF omits it (4-6 V supply, 1.3 W max, 0.1 W quiescent, -10 to 55 C, 850 nm, ±1.8°, 0.08-35 m, TTL UART 115200 8N1); mirrored copy at resources.ampheo.com
- image Seeed product gallery - kit contents photograph showing the 8-pin 0.5 mm FPC, FPC-8P 0.5MM breakout and USB-TTL adapter (vision-read 2026-10-21)
